fix: replace :: with localhost before openBrowser() (#4856)

Author: chousheng

lib/Server.js

@@ -2955,7 +2955,9 @@ class Server {
 
       if (/** @type {NormalizedOpen[]} */ (this.options.open).length > 0) {
         const openTarget = prettyPrintURL(
-          !this.options.host || this.options.host === "0.0.0.0"
+          !this.options.host ||
+            this.options.host === "0.0.0.0" ||
+            this.options.host === "::"
             ? "localhost"
             : this.options.host
         );

test/server/open-option.test.js

@@ -134,7 +134,7 @@ describe('"open" option', () => {
     await server.start();
     await server.stop();
 
-    expect(open).toHaveBeenCalledWith(`http://[${host}]:${port}/`, {
+    expect(open).toHaveBeenCalledWith(`http://localhost:${port}/`, {
       wait: false,
     });
   });